Building Hybrid Android Apps with Java and JavaScript: by Nizamettin Gok, Nitin Khanna

By Nizamettin Gok, Nitin Khanna

Build HTML5-based hybrid purposes for Android with a mixture of local Java and JavaScript elements, with no utilizing third-party libraries and wrappers similar to PhoneGap or Titanium. This concise, hands-on publication takes you thru the whole approach, from developing your improvement atmosphere to deploying your product to an app store.

methods to create apps that experience entry to local APIs, similar to situation, vibrator, sensors, and the digicam, utilizing a JavaScript/Java bridge—and decide on the language that provides you larger functionality for every job. when you've got event with HTML5 and JavaScript, you’ll quick realize why hybrid app improvement is the wave of the future.
• organize a improvement atmosphere with HTML, CSS, and JavaScript instruments
• Create your first hybrid Android venture, utilizing Eclipse IDE
• Use the WebView regulate to host your hybrid software
• discover hybrid software structure, together with JavaScript/Java verbal exchange
• construct single-page purposes, utilizing JavaScript libraries similar to spine and Underscore
• Get optimization information and priceless snippets for CSS, DOM, and JavaScript
• Distribute your program to Google Play and the Amazon Appstore

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As you delve deeper into the details of Ant, you’ll realize the whole Ant task notion is very flexible and can be leveraged to perform very complex operations in a modular way. xml—will be gen‐ erated by the Android tool. We will look at some of these files in this chapter. xml for now. dir is missing. xml" /> To create the Ant build system for an existing project created using Eclipse, run the following: $ cd project_dir $ android update project -p . xml quite similar to the one just shown.

38 | Chapter 3: Android Fundamentals Imagine your project holding a bucket of numbers. You can take one of those numbers and allocate it to a control. Let’s first investigate this resource-reference structure a bit further. This resource ref‐ erence has the following formal structure: - @[package:]type/name. java file, discussed in Chapter 2, you’ll notice that there is an entry corresponding to each resource. The generated IDs are integers. Most methods that take strings also take these resource identifiers as inputs.

To install SASS from the command line, use the following command: $ gem install sass For Windows, you will first install Ruby using an installer that can be found at the Ruby Installer website. Once Ruby is installed, you can in place SASS as previously described using the command line. If the command fails in Windows, please make sure you have Ruby and Ruby Gems in your path. Details on managing the path variables in Windows can be found at the Windows website for managing en‐ vironment variables.

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